Mitered-joint bracket



Dec. 11, 1928. 1,694,667

P. D. PECK ET AL MI'IERED JOINT BRACKET Filed May 23, 1927 Reg 17 eakWz'maie S. Tfiomas' Patented Dee. ll, 192d.

QFFEQE.

PERCY I). PEOK AND WINGATE THOMAS, OF CHICAGQ, ILLINOEd, ASSIGNORS TKNAPP BROTHEE$ MANUFACTURING 00., OF CIHGAGO, ILLINOIS, A CORPORATION 0FILLINOIS.

JXEITEBEDJOILQT BBACKET.

Application filed May 23, 1927.

This invention relates to an improved mitered joint for metal frames andthe like and I more particularly to an improved mitered joint bracketand the method of securing the same in place to rigidly hold the miteredends of a pair of frame members in rigid abutting position to form asubstantial miter-ed corner for a metal frame. Heretofore mitered jointsfor metal frames have been formed by usinga plurality of angle plates ofdifferent sizes on the inner side of the corner of a metal frame, saidbracket plates being welded or otherwise secured in position.

It is an object-of this invention to provide an improved miteringbracket constructed of a single piece of metal and so constructed thatthe end portions thereof may engage the m ner and outer corners of amite ed joint while the intermediate portion is adapted to seat flatlyagainst the intermediate fiat portion of the corner of the frame afterwhich the different sections are adapted to be spot welded or otherwiserigidly secured in place 'to form a rigid mitered joint. I

lit is also an object of this invention to provide a one piece miteringjoint bracket with portions thereof positioned in different planes topermit the bracket to seat diagonally within a corner of a metal frameand be welded therein to form a rigid mitered joint between the abuttingframe members.

It is an important object of this invention to provide an improvedmitered joint bracket struck from sheet metal having end angle sectionsintegrally connected with and oifset in opposite directions from anintermediate or main body section to permit the bracket to seat in ametal frame againstflat portions disposed in different parallel planesand be welded thereto to hold the frame members rigidly mitcred one tothe other.

Other and further important objects of this invention will b apparentfrom the disclo sures in the specification and the accompanyingdrawings.

This invention (in a preferred form) is illustrated in the drawings andhereinafter more fully described.

On the drawings:

Figure 1 is a fragmentary top elevation of a corner of a metal frame.

Figure 2 is an enlarged rear view of the corner of the metal frameequipped with a mitering joint bracket embodying the principles of thisinvention.

Serial No 193,498.

Figure 3 is a sectional view of the corner of the frame taken onlineIHIII of Figure 2.

Figure 4t is a top plan view of a mitered joint bracket embodying theprinciples of this invention.

Figure 5 is a side elevation thereof.

Figure 6 is a transverse section of the bracket taken on line Vll l: ofFigure 4.

As shown on the drawings:

The reference numerals 1 indicate a pair of metal frame moldings, theends of which are beveled or mitered at 2 to permit the ends of saidframe moldings to abut one another at right angles to form a framecorner. Each of the frame moldings is provided with an outer fiatportion 3, an intermediate flat portion 4, and an inner fiat portion 5,with said flat portions 8 and 5 being disposed on opposite sides of themain or intermediate fiat portion f. The outer flat portion 8 isintegrally connected with the intermediate fiat portion dby a roundedconnecting section 6 while the inner fiat section 5 is connected withthe inner margin of the intermediate flat portion 4: by means of acurved portion T.

For the purpose of connecting the two mitered ends of the frame sectionsor moldings 1 together to form a rigid mitered corner of a metal frame,applicant uses an improved one piece metal bracket constructed bystamping the same from a sheet of metal and bending the end portions ofthe bracket out of the plane of the intermediate portion of the bracket.The improved bracket comprises an intermediate or main body plate orsection 8 of angled form having integrally formed on the pointed end 9thereof a pair of connecting arms or straps 10 directed at substantiallyright angles to one another and curved downwardly out of the plane ofthe main body section 8. integrally connected to the outer ends of thecurved arms or straps 10 is an outer angled section or toe plate 11 constructed of two arms positioned at substantially right angles to oneanothen the ends of said arms being integral with the ends of the curvedarms 10. The toe plate 11 is flat and is positioned in a plane offsetand parallel to the plane of the main plate section 8. Integrally formedon the opposite ends 12 of the main plate section 8 are a pair ofinwardly directed arms or straps 13 which are bent or curved upwardlyout of the plane of the main plate section Sin a direction opposite fromthe direction of the cur ed arms 10. The arms 13 are curvedcomplementally to the curvature oi the curved section '4' of the metalframe members 1. integrally connecting the two approaching ends oi? thearms 13 is a flat metal heel plate J or angler" shape, the point oi theangle be' directed oward the points or the main body plate 8 one toeplate 11. The heel plate is o' i aplane parallel to the plates 8 and i.

it will thus be seen that the improved mit-ering bracl: t comprisesthree angled plates with the end angle plates being disposed in planeson the opposite sides of the main or intermeciate angled plate sectionwith which said end plate sections are integrally connected by means othe angled straps 10 and 13, respectively. The shape or the bracket issuch that it can be conve .ly seated within the corner of a metal 7 iewith the intermediate or main plate sec on seati against the inner facesof the hat portions 4: of the frame members while the tee plate 11 isadap ed to ("Edil in the outer corner of r n p g n the corner or the Ir-me at'mst the inner of the outer flat portions 3 t frame members. Thehecplatthe main plate section 8 by ..1 curved straps or arms 13 is adapin the inner corner of the frame against the inner flat 5 of the framemembers 1. This arrangement is olearlv illustrated in Figures 2 and 3 ofthe drawings. It will thus be seen that the improved bracke extendsdiagona ly thron the corner of the frame from the inner corner 0 theouter corner thereoi with the plate portions 8, ll, and 1 seated flatlyagainst the fat portions 4, 3, and 5, respectively, of the framemembers. After a bracket has been mounted in position as described, achof the plate sections joints by providing a one piece oilset brackethaving plurality t t sections conn-ec by means of arms curvedcomplementally the curvature of portions the i" bers so that the entirebracket may be con veniently seated diagonally in the co "her of essee?plate, curved arms i -togrally connecting sai 9 are,

toe plate with said intermediate angle pl sposed in a plane a llatangled heel plate di parallel to the intermediate angle plate, and

curved arms integrally connecting said heel plate with said intermediateangle plate.

2. A mitered joint bracket compr ing a flat intermediate plate, flat encplatepositioned above and below the same, and arms integrally connectingsaid flat end plates with said intermediate plate.

3. A mitered joint lracket comprising fiat intermediate plate, ilat endplates, and curved arms integrally 0 meeting said intermediate platewith said end plates to hold said end plates positioned in planesparallel to and on opposite sides of the plane of intermediate plate.

A mitered joint bracket constructed of a single piece of sheet metalcomprising an intermediate angle plate, angled too plat", curved armsintegrally c ting said d toe plate with one one. of the internmplaneparallel to one side or the intermediate plate, an angled heel plate,and curv d arms integrally conn cted to the ends of said anglel heelplate and to the opposite end of said intermediate plate to hold saidplate in a plane parallel to the intermediate plate on a side oppositefrom that in which the toe plate is positioned.

5. A miter-ed joint bracket comprising a plurality of flat angle plateshaving the apexes thereof directed in same direction, and means forintegrally connecting said plates to hold the same in different parallelplanes.

in testimony whereof we have hereunto subscribed our names at Chicago,Cool: County, Illinois.

PERCY D. PECK. l/VINGATE S. THQMAS.

diate angle plate to hold said toe plate in a

